a) \(n_{N_2O}=\dfrac{3,3}{44}=0,075\left(mol\right)\)

=> \(V_{N_2O}=0,075.22,4=1,68\left(l\right)\)

\(n_{CO_2}=\dfrac{95,48}{44}=2,17\left(mol\right)\)

=> \(V_{CO_2}=2,17.22,4=48,608\left(l\right)\)

\(n_{SO_2}=0,5\left(mol\right)\)

=> \(V_{SO_2}=0,5.22,4=11,2\left(l\right)\)

b) \(n_{CO_2}=0,08\left(mol\right)\)

\(n_{NH_3}=0,09\left(mol\right)\)

=> \(V_{hh}=\left(0,08+0,09\right).22,4=3,808\left(l\right)\)

c) \(n_{CO_2}=\dfrac{0,88}{44}=0,02\left(mol\right)\)

\(n_{NH_3}=\dfrac{0,68}{17}=0,04\left(mol\right)\)

=> \(V_{hh}=\left(0,02+0,04\right).22,4=1,344\left(l\right)\)

:Hãy cho biết thể tích khí ở đktc của: a)3,3 g N2O; 95,48 g CO2; 0,5 N phân tử SO2.

n _N2O=\(\dfrac{3,3}{44}=0,075mol\)

=>V_N2O=0,075.22,4=1,68l

n _CO2=\(\dfrac{95,48}{44}\)=2,17mol

=>V_CO2=2,17.22,4=48,608l
nSO2=0,5N6N=112(mol)

n _SO2=\(\dfrac{0,5N}{6N}=\dfrac{1}{12}mol\)

=>V_SO2=\(\dfrac{1}{12}.22,4=\dfrac{28}{35}\)mol

b)Hỗn hợp khí gồm: 0,08 N phân tử CO2; 0,09 N phân tử NH3. c)Hỗn hợp khí gồm: 0,88 g CO2; 0,68 g NH3.

=>n _hh=\(\dfrac{0,08N}{6N}+\dfrac{0,09N}{6N}=\dfrac{17}{600}N\)

=>V_{hhCO2, NH3}=\(\dfrac{17}{600}.22,4=\dfrac{238}{375}l\)

->n_hh=\(\dfrac{0,88}{44}+\dfrac{0,68}{17}=0,06mol\)

=>V_{hhCO2, NH3}=0,06.22,4=1,344l

a) nNaOH=20/40=0,5(mol)

nN2=1,12/22,4=0,05(mol)

nNH3= (0,6.10²³)/(6.10²³)=0,1(mol)

b) mAl2O3= 102.0,15= 15,3(g)

mSO2= nSO2 . M(SO2)= V(CO2,đktc)/22,4 . 64= 6,72/22,4. 64= 0,3. 64= 19,2(g)

mH2S= nH2S. M(H2S)= (0,6.10²³)/(6.10²³) . 34=0,1. 34 = 3,4(g)

c) V(CO2,đktc)=0,2.22.4=4,48(l)

nSO2=16/64=0,25(mol) -> V(SO2,đktc)=0,25.22,4=5,6(l)

nCH4=(2,1.10²³)/(6.10²³)=0,35(mol) -> V(CH4,đktc)=0,35.22,4=7,84(l)

a,n=m/M=20/(23+17)20:40=0,5(mol)

n=V/22,4=11,2/22,4=0,5(mol)

n=số pt/số Avogađro=6.10^23:6.10^23=1

$M_X = \dfrac{22,8}{ \dfrac{19,2}{64} } = 76$

Ta có : 

$n_C = n_{CO_2} = \dfrac{1,344}{22,4} = 0,06(mol)$
$n_H = 2n_{H_2O} = 2.\dfrac{1,44}{18} = 0,16(mol)$
$\Rightarrow n_O = \dfrac{1,52 -0,06.12 -0,16}{16} = 0,04(mol)$

$n_C : n_H :n_O =0,06 : 0,16 : 0,04 = 3 : 8 : 2$

Vậy CTPT có dạng : $(C_3H_8O_2)_n$

Suy ra:  $76n = 76 \Rightarrow n =1 $

Vậy CTPT là $C_3H_8O_2$

a. \(n_{Ag}=\dfrac{1,8.10^{25}}{6.10^{23}}=30\left(mol\right)\)

b. \(n_{CO_2}=\dfrac{59,4}{44}=1,35\left(mol\right)\)

c. \(n_{K_2O}=\dfrac{4,2.10^{22}}{6.10^{23}}=0,07\left(mol\right)\)

d. \(n_{CuSO_4}=\dfrac{18.10^{23}}{6.10^{23}}=3\left(mol\right)\)

e. \(n_{SO_2}=\dfrac{10,08}{22,4}=0,45\left(mol\right)\)

g. \(n_{Fe_3O_4}=\dfrac{52,2}{232}=0,225\left(mol\right)\)

h. \(n_{O_2}=\dfrac{6,72}{22,4}-0,3\left(mol\right)\)

i. \(n_{N_2}=\dfrac{13,6}{22,4}\approx0,6\left(mol\right)\)

Các phân tử có liên kết cho nhận là SO2, CO

=> Đáp án C